import threading
import time
num = 0

def first():

    for item in range(100000):
        global num
        num = num + 1
        pass
    print(num)
    pass

def second():

    for item in range(100000):
        global num
        num = num + 1
        pass
    print(num)
    pass


if __name__ == '__main__':
    first_thread = threading.Thread(target=first)
    second_thread = threading.Thread(target=second)
    first_thread.start()
    # 解决方法
    first_thread.join()
    second_thread.start()

